What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

United Airlines, Delta, and Qantas Airways are the most popular carriers operating from Louisville Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Sydney from Louisville according to our data. United Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 5 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of December 2025.

How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$552 Cheap Flights from Louisville to Sydney in 2025/26

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3:30 pm - 7:00 am

SDF

SYD

25h 30m2 stops

10:20 am - 10:09 pm

SYD

SDF

25h 49m2 stops

$1,168United Airlines

lun., may. 4 - mar., may. 26

10:38 am - 6:05 am

SDF

SYD

28h 27m2 stops

9:25 am - 10:34 pm

SYD

SDF

27h 09m2 stops

$1,218Delta

jue., mar. 19 - dom., abr. 5

10:10 am - 6:35 am

SDF

SYD

30h 25m2 stops

9:25 am - 8:45 am

SYD

SDF

37h 20m2 stops

$1,228Delta

lun., may. 25 - lun., jun. 15

7:45 am - 6:05 am

SDF

SYD

31h 20m2 stops

9:25 am - 10:34 pm

SYD

SDF

27h 09m2 stops

$1,267Delta

jue., mar. 19 - dom., abr. 5

3:30 pm - 7:00 am

SDF

SYD

23h 30m1 stop

11:50 am - 9:59 pm

SYD

SDF

26h 09m1 stop

$1,271United Airlines

sáb., feb. 7 - mié., feb. 11

2:05 pm - 9:15 am

SDF

SYD

27h 10m2 stops

12:10 pm - 10:30 pm

SYD

SDF

26h 20m2 stops

$1,275United Airlines

sáb., feb. 7 - mié., feb. 11

11:10 am - 9:15 am

SDF

SYD

30h 05m2 stops

12:10 pm - 8:28 pm

SYD

SDF

24h 18m2 stops

$1,276United Airlines

sáb., feb. 7 - mié., feb. 11

9:32 am - 7:00 am

SDF

SYD

31h 28m2 stops

10:20 am - 9:57 pm

SYD

SDF

49h 37m2 stops

$1,336United Airlines

dom., may. 24 - lun., jun. 15

3:50 pm - 6:55 am

SDF

SYD

25h 05m2 stops

9:30 am - 10:09 pm

SYD

SDF

50h 39m2 stops

$1,349United Airlines

dom., may. 24 - sáb., jun. 13

9:15 am - 7:00 am

SDF

SYD

30h 45m1 stop

9:30 am - 10:32 pm

SYD

SDF

27h 02m2 stops

$1,363United Airlines

jue., mar. 19 - dom., abr. 5

Delta flights from Louisville to Sydney

Our best Delta deals on Louisville to Sydney flight tickets

Delta

May 4

SDF10:10 amLouisville Intl

30h 25m

2 stops

SYD6:35 amSydney Kingsford Smith

May 25

SYD9:25 amSydney Kingsford Smith

26h 12m

2 stops

SDF9:37 pmLouisville Intl

$1,168

Find similar

Delta

Mar 19

SDF10:38 amLouisville Intl

28h 27m

2 stops

SYD6:05 amSydney Kingsford Smith

Apr 5

SYD9:25 amSydney Kingsford Smith

27h 09m

2 stops

SDF10:34 pmLouisville Intl

$1,218

Find similar

Delta

May 25

SDF10:10 amLouisville Intl

30h 25m

2 stops

SYD6:35 amSydney Kingsford Smith

Jun 15

SYD9:25 amSydney Kingsford Smith

37h 20m

2 stops

SDF8:45 amLouisville Intl

$1,228

Find similar

Air Canada flights from Louisville to Sydney

Our best Air Canada deals on Louisville to Sydney flight tickets

Air Canada

Feb 7

SDF8:29 amLouisville Intl

33h 06m

3 stops

SYD9:35 amSydney Kingsford Smith

Feb 11

SYD11:20 amSydney Kingsford Smith

25h 08m

2 stops

SDF8:28 pmLouisville Intl

$1,890

Find similar

Air Canada

May 24

SDF7:30 amLouisville Intl

57h 50m

3 stops

SYD7:20 amSydney Kingsford Smith

Jun 15

SYD9:20 amSydney Kingsford Smith

48h 14m

3 stops

SDF7:34 pmLouisville Intl

$1,932

Find similar

Air Canada

May 28

SDF3:20 pmLouisville Intl

26h 00m

2 stops

SYD7:20 amSydney Kingsford Smith

Jun 15

SYD9:20 amSydney Kingsford Smith

48h 14m

3 stops

SDF7:34 pmLouisville Intl

$1,957

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

lun. 5/4

3:30 pm-7:00 am

2 stops25h 30m

Sydney Kingsford Smith

mar. 5/26

10:20 am-10:09 pm

2 stops25h 49m

$1,168

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

jue. 3/19

10:38 am-6:05 am

2 stops28h 27m

Sydney Kingsford Smith

dom. 4/5

9:25 am-10:34 pm

2 stops27h 09m

$1,218

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

lun. 5/25

10:10 am-6:35 am

2 stops30h 25m

Sydney Kingsford Smith

lun. 6/15

9:25 am-8:45 am

2 stops37h 20m

$1,228

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

jue. 3/19

7:45 am-6:05 am

2 stops31h 20m

Sydney Kingsford Smith

dom. 4/5

9:25 am-10:34 pm

2 stops27h 09m

$1,267

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

sáb. 2/7

3:30 pm-7:00 am

1 stop23h 30m

Sydney Kingsford Smith

mié. 2/11

11:50 am-9:59 pm

1 stop26h 09m

$1,271

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

sáb. 2/7

2:05 pm-9:15 am

2 stops27h 10m

Sydney Kingsford Smith

mié. 2/11

12:10 pm-10:30 pm

2 stops26h 20m

$1,275

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

sáb. 2/7

11:10 am-9:15 am

2 stops30h 05m

Sydney Kingsford Smith

mié. 2/11

12:10 pm-8:28 pm

2 stops24h 18m

$1,276

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

dom. 5/24

9:32 am-7:00 am

2 stops31h 28m

Sydney Kingsford Smith

lun. 6/15

10:20 am-9:57 pm

2 stops49h 37m

$1,336

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

dom. 5/24

3:50 pm-6:55 am

2 stops25h 05m

Sydney Kingsford Smith

sáb. 6/13

9:30 am-10:09 pm

2 stops50h 39m

$1,349

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

jue. 3/19

9:15 am-7:00 am

1 stop30h 45m

Sydney Kingsford Smith

dom. 4/5

9:30 am-10:32 pm

2 stops27h 02m

$1,363

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Sydney?

In general, November is the cheapest month to fly from Louisville to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,142. If you are unable to visit Sydney during the month of November, then departing from Louisville during the month March is also very affordable. Most momondo users find prices during this month for around $1,199.

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Louisville to Sydney is on a Wednesday when prices can be found for as low as $1,260. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,104.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is at noon. momondo users have found flights departing from Louisville to Sydney at noon for as low as $1,343. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the morning, with an average ticket price of $1,798. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Louisville to Sydney flights?

You could potentially save up to 5% on your flight if you consider stops on a Louisville to Sydney flight.

When to book flights from Louisville to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time	23h 30m
Direct flights	None

The fastest flight from Louisville to Sydney takes 23h 30m

There are no direct flights from Louisville to Sydney. There are no popular flight routes from Louisville to Sydney.

Search flight deals

How far is Louisville Intl to Sydney Kingsford Smith by plane?
A flight from Louisville Intl to Sydney Kingsford Smith will travel around 9284.6 mi. A reasonable flight in good conditions will take 23h 30m.
When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of December 2025.
How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Louisville to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Louisville to Sydney is United Airlines (74% of total bookings). The next most popular airline is Delta (26%).

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $930	Free Cancellation	Rating 7.4 9,092 reviews		Search United Airlines flights
Delta	PriceFrom $979	Free Cancellation	Rating 7.9 8,007 reviews		Search Delta flights

Parramatta

Bondi Beach

Katoomba

Wollongong

Randwick

Coogee

Manly

Penrith

Cronulla

Lithgow

Leura

Charlestown

Terrigal

Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Sydney for you.

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Louisville to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

An easier way to manage your Sydney trip

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Cheap flights from Louisville to Sydney from $552

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Sydney departing on 5/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Delta flights from Louisville to Sydney

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How to get the cheapest flight ticket from Louisville to Sydney

What is the cheapest month to fly to Sydney?

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Louisville to Sydney is on a Wednesday when prices can be found for as low as $1,260. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,104.

What is the cheapest time of day to depart on your flight to Sydney?

Can stopping save me money on Louisville to Sydney flights?

You could potentially save up to 5% on your flight if you consider stops on a Louisville to Sydney flight.

What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

United Airlines, Delta, and Qantas Airways are the most popular carriers operating from Louisville Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

When to book flights from Louisville to Sydney

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time

Direct flights

How far is Louisville Intl to Sydney Kingsford Smith by plane?

When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

What is the most popular airline from Louisville to Sydney?

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

How can momondo help me find flights from Louisville to Sydney?

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing New South Wales